#include "graphicscrossitem.h"

graphicsCrossItem::graphicsCrossItem(qreal px, qreal py)
{
    x = px;
    y = py;
    dim=3;
    col = QColor(Qt::lightGray);
    scIndex=1;

}

QRectF graphicsCrossItem::boundingRect() const
{
    qreal d = dim*scIndex;

    return QRectF(x-d, y-d, 2*d, 2*d);
}


void graphicsCrossItem::setColor(QColor c)
{
    if (col!=c) {
        prepareGeometryChange();
        col = c;
    }
}

void graphicsCrossItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    qreal d = dim*scIndex;
    painter->setPen(QPen(col));
    QPointF p1(x-d, y-d);
    QPointF p2(x+d, y+d);
    QPointF p3(x-d, y+d);
    QPointF p4(x+d, y-d);

    painter->drawLine(p1, p2);
    painter->drawLine(p3, p4);

}

void graphicsCrossItem::setPos(QPointF p)
{
    qreal px, py;
    px= p.x(); py= p.y();

    if ((x!=px)||(y!=py) )  {
        prepareGeometryChange();
        x=px; y=py;
    }
}

void graphicsCrossItem::setPosPolar(qreal d, qreal a)
{
    if (d>0)
    {
        setPos(cos((90-a)/180*M_PI)*d, -sin((90-a)/180*M_PI)*d);
    }
    else
    {
        setPos(0,0);
    }
}

void graphicsCrossItem::setScaleIndex(qreal s)
{
    if (scIndex!=s){
        prepareGeometryChange();
        scIndex=s;
    }

}